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Détail de l'auteur
Auteur Moncho Gomez-Gesteira
Documents disponibles écrits par cet auteur
Affiner la rechercheSPHysics-FUNWAVE hybrid model for coastal wave propagation / Muthukumar Narayanaswamy in Journal of hydraulic research, Vol. 48 N° spécial (2010)
[article]
in Journal of hydraulic research > Vol. 48 N° spécial (2010) . - pp. 85-93
Titre : SPHysics-FUNWAVE hybrid model for coastal wave propagation Titre original : Modèle hybride SPHysics-FUNWAVE pour la propagation côtière des vagues Type de document : texte imprimé Auteurs : Muthukumar Narayanaswamy, Auteur ; Alejandro Jacobo Cabrera Crespo, Auteur ; Moncho Gomez-Gesteira, Auteur Année de publication : 2010 Article en page(s) : pp. 85-93 Note générale : Hydraulique
Résumés en Anglais et Français
Langues : Anglais (eng) Mots-clés : Boussinesq type wave propagation model Coupling technique FUNWAVE Hybrid model Smoothed particle hydrodynamics SPH SPHysics Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : It is difficult to study the process of wave propagation from the deep ocean to the nearshore region using a single model due to the presence of multiple scales both in time and in space. Numerical models based on the Boussinesq equations are well known to accurately propagate waves from intermediate water depth to the nearshore region. Since they are 2D models, they are computationally efficient and can be applied to study wave transformations over large domains. Numerical models based on Smoothed Particle Hydrodynamics can inherently capture multiply connected free surfaces and hence can be naturally used to capture breaking free surfaces and estimate breaking induced runup and overtopping. Here, a hybrid model (SPHunwave) is developed combining the main advantages of a Boussinesq model (FUNWAVE) and a SPH model (SPHysics). The details of the coupling procedure along with preliminary validation tests are presented.
DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com [article] SPHysics-FUNWAVE hybrid model for coastal wave propagation = Modèle hybride SPHysics-FUNWAVE pour la propagation côtière des vagues [texte imprimé] / Muthukumar Narayanaswamy, Auteur ; Alejandro Jacobo Cabrera Crespo, Auteur ; Moncho Gomez-Gesteira, Auteur . - 2010 . - pp. 85-93.
Hydraulique
Résumés en Anglais et Français
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 48 N° spécial (2010) . - pp. 85-93
Mots-clés : Boussinesq type wave propagation model Coupling technique FUNWAVE Hybrid model Smoothed particle hydrodynamics SPH SPHysics Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : It is difficult to study the process of wave propagation from the deep ocean to the nearshore region using a single model due to the presence of multiple scales both in time and in space. Numerical models based on the Boussinesq equations are well known to accurately propagate waves from intermediate water depth to the nearshore region. Since they are 2D models, they are computationally efficient and can be applied to study wave transformations over large domains. Numerical models based on Smoothed Particle Hydrodynamics can inherently capture multiply connected free surfaces and hence can be naturally used to capture breaking free surfaces and estimate breaking induced runup and overtopping. Here, a hybrid model (SPHunwave) is developed combining the main advantages of a Boussinesq model (FUNWAVE) and a SPH model (SPHysics). The details of the coupling procedure along with preliminary validation tests are presented.
DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com State-of-the-art of classical SPH for free-surface flows / Moncho Gomez-Gesteira in Journal of hydraulic research, Vol. 48 N° spécial (2010)
[article]
in Journal of hydraulic research > Vol. 48 N° spécial (2010) . - pp. 6-27
Titre : State-of-the-art of classical SPH for free-surface flows Titre original : Etat de l'art de la méthode SPH pour les écoulements à surface libre Type de document : texte imprimé Auteurs : Moncho Gomez-Gesteira, Auteur ; Benedict D. Rogers, Auteur ; Robert A. Dalrymple, Auteur Année de publication : 2010 Article en page(s) : pp. 6-27 Note générale : Hydraulique
Résumés en Anglais et Français
Langues : Anglais (eng) Mots-clés : Computational fluids Dam break Density correction Kernel correction Smoothed particle hydrodynamics SPH Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : Smoothed Particle Hydrodynamics (SPH) is the most widely established mesh-free method which has been used in several fields as astrophysics, solids mechanics and fluid dynamics. In the particular case of computational fluid dynamics, the model is beginning to reach a maturity that allows carrying out detailed quantitative comparisons with laboratory experiments. Here the state-of-the-art of the classical SPH formulation for free-surface flow problems is described in detail. This is demonstrated using dam-break simulations in 2-D and 3-D. The foundations of the method will be presented using different derivations based on the method of interpolants and on the moving least-squares approach. Different methods to improve the classic SPH approach such as the use of density filters and the corrections of the kernel function and its gradient are examined and tested on some laboratory cases.
DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com [article] State-of-the-art of classical SPH for free-surface flows = Etat de l'art de la méthode SPH pour les écoulements à surface libre [texte imprimé] / Moncho Gomez-Gesteira, Auteur ; Benedict D. Rogers, Auteur ; Robert A. Dalrymple, Auteur . - 2010 . - pp. 6-27.
Hydraulique
Résumés en Anglais et Français
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 48 N° spécial (2010) . - pp. 6-27
Mots-clés : Computational fluids Dam break Density correction Kernel correction Smoothed particle hydrodynamics SPH Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : Smoothed Particle Hydrodynamics (SPH) is the most widely established mesh-free method which has been used in several fields as astrophysics, solids mechanics and fluid dynamics. In the particular case of computational fluid dynamics, the model is beginning to reach a maturity that allows carrying out detailed quantitative comparisons with laboratory experiments. Here the state-of-the-art of the classical SPH formulation for free-surface flow problems is described in detail. This is demonstrated using dam-break simulations in 2-D and 3-D. The foundations of the method will be presented using different derivations based on the method of interpolants and on the moving least-squares approach. Different methods to improve the classic SPH approach such as the use of density filters and the corrections of the kernel function and its gradient are examined and tested on some laboratory cases.
DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com